Combined Spectrum and Anisotropy Study of Cosmic Rays from the Vela SNR with CALET

由于Vela SNR的光谱和各向异性电子宇宙射线特征强烈依赖于宇宙射线传播条件，因此大力改进底层传播模型。传播参数确定在一个随机行走优化通过比较测量的原子核宇宙谱的数值传播代码DRAGON的输出。该模型仅用传播效应解释了核谱的差异，而不需要考虑特定的加速机制，并与核谱和主次比的测量结果很好地匹配。此外，基于随机采样的单个点源，建立了CALET全电子谱和AMS-02纯正电子谱的解释模型（SNR，星）在整个星系的发展，取代现象幂律参数化的贡献，从遥远的天体物理源。这提供了源谱幂律指数和截止能量范围，这是由于需要解释远距离源谱的较低能量部分，然后，它可以用来限制船帆座信噪比的可能源谱参数的范围。传播模型和天体物理源解释已经被（或将很快）提出自己或在间接暗物质搜索的背景下与CALET。目前正在按计划将未分仓似然分析方法与研究计划中提出的逐事件各向异性分析相结合。

Since the spectral and anisotropy electron cosmic-ray signatures of the Vela SNR depend strongly on the cosmic-ray propagation conditions, strong effort was put into improving the underlying propagation model. The propagation parameters are determined in a random walk optimization by comparing measured nuclei cosmic spectra with the output of the numerical propagation code DRAGON. The developed model explains the differences in the measured nuclei spectra by propagation effects only, without the need for species-specific acceleration mechanisms, and matches well the measured nuclei spectra as well as primary-secondary ratios.Furthermore, an interpretation model for the all-electron spectrum by CALET and positron-only spectrum by AMS-02 based on randomly sampled individual point sources (SNR, pulsars) throughout the galaxy was developed, replacing the phenomenological power-law parameterization for the contribution from distant astrophysical sources. This provides the source spectrum power-law index and cutoff energy ranges allowed by the need to explain the lower energy parts of the spectra by the distant sources, which then can be applied to constrain the range of possible source-spectrum parameters for the Vela SNR.The propagation model and astrophysical source interpretation have been (or will soon be) presented on their own or in the context of indirect dark matter search with CALET. Work on the planned combination of the un-binned likelihood analysis method with the event-by-event anisotropy analysis presented in the research plan is ongoing.